PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-22:13:10
G03     214.8          59.4               10.7 +/-    1.55      12.3 +/-    1.55  0.150 / 0.220
G07     256.8          16.9               10.7 +/-    1.12      25.4 +/-    1.12  0.130 / 0.200
G09     310.3          28.9                7.3 +/-    2.57      13.1 +/-    2.57  0.040 / 0.040
G16     102.7          64.5               12.6 +/-    0.63      13.8 +/-    0.63  0.040 / 0.040
G22     189.6          43.1               10.9 +/-    0.59      15.1 +/-    0.59  0.040 / 0.050
G23     326.7          56.9               10.4 +/-    0.96      12.1 +/-    0.96  0.040 / 0.040
G26     56.9           46.9                8.4 +/-    1.06      11.1 +/-    1.06  0.050 / 0.030
G31     57.4           14.9                6.4 +/-    2.80      15.9 +/-    2.80  0.050 / 0.030